Definitions
1.nounA man of gentle but not noble birth, particularly a man of means (originally ownership of property) who does not work for a living but has no official status in a peerage; an armiferous man ranking below a knight."Being a gentleman, Robert was entitled to shove other commoners into the gongpit but he still had to jump out of the way of the knights to avoid the same fate himself."
2.nounAny well-bred, well-mannered, or charming man.
3.nounAn effeminate or oversophisticated man."Well, la-di-da, aren't you just a proper gentleman?"
4.noun(polite term of address) Any man."Please escort this gentleman to the gentlemen's room."
5.noun(usually historical, sometimes derogatory) An amateur or dabbler in any field, particularly those of independent means.
6.nounAn amateur player, particularly one whose wealth permits him to forego payment.